Description
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
References (10)
Scores
CVSS v3
8.8
EPSS
0.0056
EPSS Percentile
68.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-704
Status
published
Products (6)
debian/debian_linux
9.0
debian/debian_linux
10.0
debian/debian_linux
11.0
mozilla/firefox
< 95.0
mozilla/firefox_esr
< 91.4.0
mozilla/thunderbird
< 91.4.0
Published
Dec 08, 2021
Tracked Since
Feb 18, 2026